Migrating MongoDB GUIDs from Legacy to Standard Format (MongoDB v2 to v3)
Introduction
When upgrading from MongoDB v2 to v3, one significant change is the GUID representation format. MongoDB v2 used UuidLegacy (CSharpLegacy) format while MongoDB v3 uses UuidStandard format by default. This causes compatibility issues when attempting to read legacy data with newer MongoDB driver versions.
This guide provides a comprehensive approach to migrating your existing MongoDB data from legacy GUID format to the standard format used in MongoDB v3 and later versions.
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